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q what are the features of hnrnaheterogeneous nuclear rna hnrna - primary precursor mrna transcript made in eukaryotic nucleus are called hnrna an
q how sex occurs in bacteriaoccurrence of sex in bacteria was first described by edward tatum and joshua lederberg in 1946 nature volume 158 page 558
q do all molecules of dna have the same amounts of nitrogenous basesnumber and sequence of nitrogenous bases in dna molecule are key elements in
q is a gene the same as a dna moleculegenes are units of heredity a gene is a section or segment of a dna molecule this section of dna provides a
q what is an illustration of gene controlan elegant instance of gene control in bacteria is operon system a cluster of genes which is responsible for
q what are the main causes of mutationsome mutations take place randomly and spontaneously during process of mitosis or meiosis others are caused by
q distinguish among the terms stimulus sensation and perceptiona stimulus is an energy source chemical light wave pressure etc which activates a
q why is it dangerous to talk while eatingif a person talks when eating food may be inhaled into the lungs generally after food is swallowed it
q why is there a popping sound when you crack your knuckles and is it dangerous to crack themsome reasons have been given for the characteristic
q which structures of the body have more bones for their size than any other part of the bodyhand and wrist have more bones in them for their size
q how do bones growbones form and develop through a process known as ossification there are two types of ossification endochondral ossification and
q what is rigor mortisdead bodies are at first limp many hours after death skeletal muscles undergo a partial contraction that fixes the joints this
q are there differences between the male and female skeletonsmany general differences exist between female and male skeletons male skeleton is
q which types of tissue have the greatest capacity to regenerateepithelial and connective tissues have the greatest capacity to regenerate in
q is all the cartilage in the body the samethere are 3 types of cartilage in the human body 1 hyaline cartilage 2 elastic cartilage and 3
q how is the skin involved in the regulation of body temperatureskin is one of various organ systems participating in maintaining a core temperature
q are body planes important for identifying anatomical structurein order to observe and study structural arrangement of the internal organs body may
q what is cerumencerumen is a fatty oily substance produced by theceruminous glands in outer part of ear canal this compound is generally referred to
q what is the auditory tube and its functionauditory tube eustachian tube connects each middle ear to the throat this tube conducts air between
q what hormone can be used to overcome jet lagjet lag takes place when an individuals biological clock is out of sync with local time according to
q what structure of the eye produces tearslachrymal gland which is a part of larger lachrymal apparatus produces tears that flow over anterior
q why is a manrsquos voice usually lower than a womanrsquos voicepitch of the voice-how low or high it sounds-it depends on the length tension and
rotheras testit is highly sensitive for both acetoacetic and acetone although it is one of the oldest methods still it is widely usedprocedure- take
state the testing of ketones in urineketones are also known as ketone bodies ketone bodies are catabolic products of free fatty acids and three
state about hellers nitric acid testtake 1 ml concentrated fuming nitric acid in a test tube and add 2 ml of urine by means of a pipette by the side